Drawing frame



July 23, 1929. R. NlGRlN DRAWING FRAME Filed June 19. 192s JWM fPatented July 23, 1929.

UNITED STATES PATENT OFFICE.

TEXTIEL MAATSCHAPPIJ EN MAUTNER N. V. 0F

COMPANY 0F THE NETHERLANDS.

ROTTERDAM, NETHERLANDS, A

DRAWING FRAME.

Application filed June 19,1928, Serial No. 286,510, and inCzechoslovakia June 27, 1927.

This invention relates to a drawing frame for spinning machines whichdiffers from known drawing frames by singleor double-sided rovingcondensers which rest loosely on the upper rollers, these condenser-spreferably not having driving means, but being provided free to slide toand fro on the roller with the roving passing through the condenser.

The object of this roving condenser is not only to condense the libresot the prcliminarily drawn roving but also to keep the rollers clean andthereby prevent the roving from adhering to the small rollers.

In the drawing:

lligure l shows by way of example a oonstruction of a drawing traine inside elevation, whilst Figure 2 shows in perspective the arrangement ofthe roving condenser, and

Figures 3 and Il illustrate in perspective the condenser in twoconstructions.

.lt is assumed as known that the drawing 7 'trame is constituted bylluted cylinders or rollers l, 2, 3, and each ot which cooperates with atop roller G, i', 8, i) and l0.

rlhe roving' is introduced (single or doubled) to the feed roller 5 andtransmitted by the latter between the cylinders et and 9 to thecylinders 3 and 8. lhe roving which is partly preliminarily drawn istransmitted hy the cylinder 3 to the pair or" rollers 2, 7. From thepair of rollers 2, 7 the roving passes between the rollersl, 6, startingfrom which the twisting of the inely drawn roving for the purpose otforming yarn is efected by the spindle in the usuel manner.

The weighting of the two top rollers 6 and 8 is ell'ected hy means ol ajoint saddle 15, the hook 14 oit' which is leent out rearwardly.

Aocordino' to the invention, the roving condensers l2 (Figures l and 2)overlap the rollers and are constituted by an are shaped rider, the arcof which is adapted to the diameter of the upper roller. According toFigures 2 and 3, the arc is provided at one side with extensions 16which leave between them a slot 17 which is widened out into a circle atits end 18. A handle 19 is preferably stamped out in the are of thecondenser by means of which the condenser may be introduced quite simplyinto the drawing frame and removed from the saine.

ln the construction shown roving condenser is provided with extensions16, lo at both sides of the arc.

'lhrse roving condensers lie loosely on the upper roller, they are notdriven and are not held. in any other way on the rollers. .lhc rovingcondensers only follow the lateral movement ol the roving which is givenits n'iovement in a known manner by a guide lil. 'lhe roving condensersare chiefly intended i'or condensing rovings which are alreadypreliminarily drawn and at the saine time they lreepfthe roller clean,owing to which, more particularly on rollers of small diameter,adherence of the roving, which is exceedingly injurious, is avoided.

l claim:

l. ln a drawing mechanism the combination with a pair ot' cooperatingupper and lower rollers through the nip of which a roving may pass of ahook-shaped plate loosely hanging upon the upper roller and having aslot in its depending portion through which the roving may pass to thenip ot the rollers.

2. ln a drawing mechanism the combination with a pair of upper a'ndlower rollers through the nip ot' which two spaced rovings may pass of apair of hook-shaped plates hanging upon the upper rollers, the twohook-shaped plates each having a slot in its depending portion throughwhich a roving may pass to the nip of the rollers.

3. ln a drawing mechanism, the combination with a pair of upper andlower rollers through the nip of which a roving may pass ot an invertedU-shaped plate loosely hangin Figure 4, tho

ing on the upper roll, the depending portions of the said plate eachhaving a slot therein, through which slots the roving may pass to andaway from the nip of the rollers.

4. In a drawing mechanism the combination with a pair of upper and lowerrollers through the nip of which a roving may pass, ot' a pair ofinverted U-shaped plates, each of the said plates hanging on the upperroll, each o't' the depending portions of both said plates having a slotthrough which slots rovings may pass to and out of the nip of therollers. f

5. For use in a drawing mechanism comprisinp; a pair of drawing rollers,a metal plate bent to a U-shape to hang freely upon plate aving one endbent to form a hook the upper roller the ends of the plate being to hangfreely upon the u per roller, the straight and provided with inwardlyex- 10 other end being straight an provided with tending slot-s. 5 aslot extending inwardly from the said end. In testimony whereof I haveSigned my 6. For use in a drawing mechanism eomname to thisspecification. prising a pair of drawing rollers, a metal RUDOLF NIGRlN

